280995160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{226609}}^1$

素因数の和:226651

約数の個数: 32

約数和(自身を含む): 652636800

約数和(自身を除く): 371641640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 226609, 453218, 906436, 1133045, 1812872, 2266090, 4532180, 7024879, 9064360, 14049758, 28099516, 35124395, 56199032, 70248790, 140497580, 280995160]

約数ペア:

[(1, 280995160), (2, 140497580), (4, 70248790), (5, 56199032), (8, 35124395), (10, 28099516), (20, 14049758), (31, 9064360), (40, 7024879), (62, 4532180), (124, 2266090), (155, 1812872), (248, 1133045), (310, 906436), (620, 453218), (1240, 226609)]